Moving files from multiple folders, to one folder on same drive is making subfolders

I tried searching but I'm not sure I am using the right terms.

If I have
e:\folder1 (disc1)\one.txt
e:\folder1 (disc2)\two.txt
e:\folder1 (disc3)\three.txt
e:\folder1 (disc4)\four.txt

I select 'two, three, and four' and drag & drop them to e:\folder1 (disc 1), I end up with
e:\folder1 (disc1)\one.txt
e:\folder1 (disc1)\folder1 (disc2)\two.txt
e:\folder1 (disc1)\folder1 (disc3)\three.txt
e:\folder1 (disc1)\folder1 (disc4)\four.txt

When I am expecting
e:\folder1 (disc 1)\one.txt
e:\folder1 (disc 1)\two.txt
e:\folder1 (disc 1)\three.txt
e:\folder1 (disc 1)\four.txt

I hope this makes sense. Thank you!

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in Preferences / File Operations / Copying Files / Confirmation

Thanks!! Never would have thought to look there. Really appreciate it!